Texturing jet

ABSTRACT

A texturing jet designed for yarns being textured by a pneumatic operation in which the jet is self-chargeable with yarn by moving a bolt relative to a texturing chamber. The chamber includes a variable control pin through which a jet of air is conveyed to the texturing chamber to permit processing yarns made of various raw materials and having different twist orientations so as to obtain any desired texturing effect.

United States Patent [1 1 'Ankudowicz et al.

TEXTURING JET Inventors: Waclaw Ankudowicz, ul. Zwirki 8 1 m.7; Stanislaw Karol Kurzyniec, ,ul. Lutomierska 69 m.26; Tadeusz Jozef Biegasik, ul. Wolborska l m.66, all of Lodz, Poland Filed: Apr. 6, 1973 Appl. No.: 348,718

'U.S.Cl. ..2s/1.4

Int. Cl D02g 1/16 Field of Search 28/14, 72.12

References Cited UNITED STATES PATENTS Yamamoto 28/1.4

3,l56,028 11/1964 Weisset al ..28/72.12 3,545,057 12/1970 Lubach ..28/1.4

Primary Examiner-Louis K. Rimrodt Attorney, Agent, or Firm -waters, Roditi, Schwartz & Nissen [5 7] ABSTRACT A texturing jet designed for yarns being textured by a pneumatic operation in which the jet is self-chargeable with yarn by moving a bolt relative to a texturing chamber. The chamber includes a variable control pin through which a jet of air is conveyed to the texturing chamber to permit processing yarns made of various raw materials and having different twist orientations so ,as to obtain any desired texturing effect.

7 Claims, 3' Drawing Figures 3,823,450 July 16, 1974 PATENTEDJm. I aim 3.823.450

sum 3 n! 3- 1 TEXTURING'JET I FIELD OF THE INVENTION The present invention relates to an apparatus or, as commonly referred to, a jet for obtaining on winding and twisting machines a loop-surfaced textured yarn by a pneumatic method.

DISCUSSION OF THE PRIOR ART nal channel for feeding compressed air to the inside of the jet.

T he prior art construction is subject to a number of drawbacks and limitations which precludes the full utilization of these texturing devices. Thus, the construction of the restricting insert precludes the texturing of yarns which are made of certain types of fibers, such as glass fibers, since theconfiguration of the internal channel does not allow for a nearly perpendicular orientation of the channel'outlet relative to the conical orifice in which the texturing is effected. Although the prior art jets are applicable tothe texturing of yarns having differently oriented twists, in order tovary the orientation thereof it is necessary that each time the restricting insert be replaced by another insert having a differently positioned channel. The construction of these prior art jets and, more particularly, the configuration of the restricting insert which renders it very difficult and timeconsuming to adjust into an optimum 1 working position, i.e., texturing position, makes it imposible to achieve an automatically adjustable yarn texturing process. In order to convey yarn through the apeters of these passageways, and yarns which are made from relatively brittle fibers, such as glass fibers, tend to break when hooked. Moreover, the prior art jet twoplate structure requires an elaborate and good sealing in order to prevent dissipation or leakage of the texturing air.

Jets-which are formed without the need for a texturing chamberaare also known in the art, in which texturing occurs in a tubular'element at the end of which two, four or possibly more tangential gas or air conduits are located; the conduits being positioned so as to cause swirling of the introduced air. Due to its particular construction, this type of jet is suitable only for providing tightly or hard-twisted yarns.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a texturing jet which eliminates the drawbacks encountered in the prior art; which is adapted for texturng yarns made from various types of raw materials 2 and having different twist orientations, and which does not require the frequent replacement of the operating elements of the jet.

The foregoing object has been attained by the construction of a jet which comprises asolid housing body being provided, at its bottom part, with a sliding bolt having an axially extending channel, and with the bolt terminating in a cap. Upon applying pressure to the cap, the bolt is adapted to slide inward of the housing so as to permit self-charging of the jet with yarn which is to be textured. Once the yarn is introduced into the apparatus the bolt is permitted to return to a preset position determined by means of a screw and lock nut arapparatus processes different types of yarn. The jet is insert in the bottom plate communicates with an interconstructed so as to be self-chargeable with yarn, which greatly accelerates the starting of the texturing sequence, particularly sincethe elements of the jet automatically return to their operative positions after initiation of the self-charging operating. Furthermore, the inventive jet is capable of'texturi'ng yarns over an extensive count range, while providing for an output of to 500 meters/min, depending upon the characteristics of the yarn being processed. The components of the jet which are subject to frictional wear are readily replaceable, so as to avoid adversely affecting the operative life span of the entire texturing jet structure.

BRIEF DESCRIPTION OF THE DRAWINGS Reference is now had to the following detailed description of preferredembodiments of the present invention, taken in conjunction with the accompanying drawings, in which: i

FIG. 1 is a longitudinal sectionalview of a first embodiment of a yarn testuring jet according to the invention;

I FIG. 2 is a longitudinal sectional view of a second embodiment of the invention; and

FIG. 3 is a sectional plan view along line 3-3 in FIG. 2, showing the detail of the jet ring element structure.

DETAILED DESCRIPTION extending bore or channel 5 in the body. The channel 5 includes a replaceable tubular insert 5a of which the outlet end interiorly of body 1 protrudes about 2-3 mm above the upper end of the slide bolt 4. A control member 6 which is fastened to the lower portion of the body 1, is adapted to set the slide bolt 4 into a predetermined operative or working position, which consists of adjusting the distance between the top end of the outlet of tube 5a and the bottom of the aperture in the insert 3, thereby ensuring the desired texturing operation. Following the adjustment, both the slide bolt 4 and control member 6 may be mutually locked by means of a lock screw 7. An apertured cap 8, which is fastened to the lower end of the slide bolt 4, forms a restraining support for a compression spring 9 which is interposed between the cap 8 and the control member 6. This spring is adapted to bias the slide bolt 4 into its lower operative position. At one side of the texturing chamber, a pin 10 is press-fitted into the top portion of the body 1. The pin has a transversely extending conical channel 11 converging towards and communicating with the texturing chamber.

The texturing jet operates as follows: Upon activating an air-compressing unit (not shown), compressed air enters the jet body 1 through a labyrinthan channel de fined by an inlet 12 and the channel 11 into the texturing chamber and conical orifice 2. By pressing upwardly against the cap 8, the upper end of the tube 5a is brought close to the lower end of the outlet of insert 3 thereby causing a subpressure in view of which yarn introduced through the bottom inlet of the tube 5a in the cap 8 is sucked in and isconveyedby the subpressure through the outlet 3, to the outside of the texturing jet. Once yarn is introduced through the action of the jet, pressure on the cap 8 is removed, and the biasing action of spring 9 returns the slide bolt 4 to its pre-set lower working position. At this point the yarn texturing process commences, and the delivered textured yarn is taken up on a suitable bobbin (not shown) positioned above the jet.

Another embodiment of the jet is shown in FIGS. 2 and 3 of the drawings. The jet in this embodiment is provided with a control element located above the slide bolt cap, and which is threadingly engaged with the lower portion of the jet body. A rotatable ring is mounted on the jet body above the control element. The ring has a recessed portion formed in either its inner or outer peripheral edge so as to accommodate the end of a screw for the control element. This recessed portion restricts the transverse movement of the bolt between its upper position, for self-charging of the yarn and its lower working position. This construction facilitates the automatic operation of the jet, since it enables the accurate re-setting of the slide bolt in case of yarn breakage or replacement of the feed bobbin. It also contributes to imparting a better quality to the textured yarn, while decreasing the amount of down-time or inoperative period duration per texturing unit in which frequent re-entering of yarn is necessary. The aforementioned embodiment of the jet consists of in that the control element 6 is located above the cap 8, and the biasing compression spring 9, of which the upper end contacts the lower end of the body 1, is located above the control element 6. The control element 6 is threadedly fastened to the lower portion of the body 1 having a preferably circular cross-section. At the lower portion of the body 1 there is mounted a rotable ring 13. The ring is secured to the body by means of a screw 14. Upon rotation of the ring 13, the radially inner end of the screw 14 moves along a peripheral groove 15 formed in the external peripheral wall of the body 1. The ring 13 has a recessed portion formed in one of its edges, either inner or outer. The recessed portion 16 is adapted to accommodate the end of the screw 7 which is mounted in the control element 6.

In order to supply compressed air to the texturing chamber2, through the inlet orifice l2, and conical channel 11, there is actuated a suitable air compressor unit (not shown), which is connected to the inlet 12.

Upon loosening or radially outward movement of the screw 14 out of groove 15, the control element 6 may be turned until the slide bolt 4 is in a yarn self-charging positions. When yarn is introduced through the jet, the control element 6 is rotated backward until the slide bolt 4 is moved back into its working position. The rotation of the control element 6 is transmitted through thescrew 7, the end of which slides within the recessed portion 16, to the ring 13 which is thereby automatically set into a working position. Subsequently, the ring 13 is locked into position A by fastening the screw 14. If it is necessary to again self-charge the jet with yarn, the control element 6 is rotated until the end of the screw 7 reaches the self-charging position B in the recessed portion 16 of the ring 13. When yarn is introduced, the screw 7 is then returned to the working position A by rotating the control element 6. The spring 9 prevents the control 6 from inadvertent displacement relative to the body 1, i.e., from axial displacement of the slide bolt 4 from an optimum operative position within the texturing chamber.

While there has been shown what is considered to be the preferred embodiment of the invention, it will be obvious that modifications may be made which come What we claim is:

1. A texturing jet for manufacturing loop-surface textured yarn on winding and twisting machines in a pneumatic operation, comprising; a housing having a texturing chamber formed therein, said texturing chamber extending at its upper portion into a substantially conical yarn outlet orifice; a replaceable insert having a through-passageway being positioned in said housing, said insert having a lower end conforming to the apex portion of said conical orifice and said throughpassageway being coextensive therewith; a slide bolt being slidably mounted in the lower portion of said housing; a longitudinal bore extending through said slide bolt and communicating with said texturing chamber, said slide bolt having one end thereof projecting from said housing; a cap fastened to said projecting slide bolt end; a control element threadedly engaging the lower portion of said housing; a compression spring means normally biasing said slide bolt downwardly and outwardly of said housing; an air inlet orifice in said housing for conveying a stream of compressed air into said texturing chamber; and a press-fitted pin extending through said air inlet orifice, said pin forming a restricting insert having a labyrinth passageway for conveying ajet of said compressed air normally to said yarn outlet orifice into said texturing chamber.

2. A jet as claimed in claim 1, comprising a screw mounted in said control element for locking the latter relative to said housing.

3. A jet as claimed in claim 1, comprising a removable tubular insert being positioned in said slide bolt longitudinal bore, said tubular insert having the upper end thereof extending into said texturing chamber beyond the upper end of said slide bolt and the lower end thereof located in said cap.

being supported on the lower portion of said housing;

radially extending lock screw means mounted in said ring and being adapted to engage a groove in said housing for locking said ring against rotation relative to said housing.

7. A jet as claimed in claim 6, said ring having a recessed portionextending along a segment of the circumference thereof; and screw means mounted on said control element having one end thereof projecting into a rotatable ri 10 said recessed portion of said ring. 

1. A texturing jet for manufacturing loop-surface textured yarn on winding and twisting machines in a pneumatic operation, comprising; a housing having a texturing chamber formed therein, said texturing chamber extending at its upper portion into a substantially conical yarn outlet orifice; a replaceable insert having a through-passageway being positioned in said housing, said insert having a lower end conforming to the apex portion of said conical orifice and said through-passageway being coextensive therewith; a slide bolt being slidably mounted in the lower portion of said housing; a longitudinal bore extending through said slide bolt and communicating with said texturing chamber, said slide bolt having one end thereof projecting from said housing; a cap fastened to said projecting slide bolt end; a control element threadedly engaging the lower portion of said housing; a compression spring means normally biasing said slide bolt downwardly and outwardly of said housing; an air inlet orifice in said housing for conveying a stream of compressed air into said texturing chamber; and a press-fitted pin extending through said air inlet orifice, said pin forming a restricting insert having a labyrinth passageway for conveying a jet of said compressed air normally to said yarn outlet orifice into said texturing chamber.
 2. A jet as claimed in claim 1, comprising a screw mounted in said control element for locking the latter relative to said housing.
 3. A jet as claimed in claim 1, comprising a removable tubular insert being positioned in said slide bolt longitudinal bore, said tubular insert having the upper end thereof extending into said texturing chamber beyond the upper end of said slide bolt and the lower end thereof located in said cap.
 4. A jet as claimed in claim 3, said tubular insert upper end extending about 2 to 3 millimeter above the upper end of said slide bolt.
 5. A jet as claimed in claim 1, said restricting insert in said pin comprising a conically tapered passageway having the smaller apex end thereof communicating with said texturing chamber.
 6. A jet as claimed in claim 1, comprising said spring means being interposed between said control element and the lower portion of said housing; a rotatable ring being supported on the lower portion of said housing; radially extending lock screw means mounted in said ring and being adapted to engage a groove in said housing for locking said ring against rotation relative to said housing.
 7. A jet as claimed in claim 6, said ring having a recessed portion extending along a segment of the circumference thereof; and screw means mounted on said control element having one end thereof projecting into said recessed portion of said ring. 